US3709690A
Expired / Lapsed
US
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Novel polymers and photographic elements containing same
Assignee: Eastman Kodak Co
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Filing: 1970-12-21
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Granted: 1973-01-09
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Expires: 1990-12-21
Abstract
Abstract Polymers comprising quaternary nitrogen atoms and at least two aromatic nuclei in the polymer cation for each quaternary nitrogen atom are described. In one embodiment at least one-third of the units of said polymer comprise quaternary nitrogen atoms. In another embodiment polymers comprising at least two aromatic nuclei in the polymer cation, such as aryl groups, for each quaternary nitrogen atom can be used in photographic elements to provide excellent mordants for dyes.
Inventors
- 👤 H Cohen
- 👤 J King
- 👤 L Minsk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52; G03C8/56; C; C08; C08F; C08F8/00; C08F8/44; G03C1/00; G03C1/76; G03C1/825; G03C1/835; G03C7/00; G03C7/22; G03C7/25; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer and a dye image receiving layer comprising a polymer having at least one-third of the units represented by the following formula in copolymerized relationship with units of at least one other ethylenically unsaturated monomer:
Claim 2
Dependent Claim
33 words
A photographic silver halide emulsion comprising a polyMer having at least one-third of the units represented by the following formula in copolymerized relationship with units of at least one other ethylenically unsaturated monomer:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |